DIFFERENTIAL PRESSURE TRANSMITTER
To provide a differential pressure transmitter accurately calculating a differential pressure between a high pressure side and a low pressure side generated by pressure receiving diaphragms, by providing a correction means for correcting...

JP3633779B2

DIAPHRAGM SEALED DIFFERENTIAL PRESSURE-MEASURING APPARATUS
To reduce maintenance costs, by setting a boss part having one end fixed to a connection part of a pressure introduction tube to a diaphragm seal unit, a needle part connecting the diaphragm seal unit, and the pressure introduction tube,...

JP2005003442A

DIFFERENTIAL PRESSURE AND PRESSURE TRANSMITTER
To provide a differential pressure and pressure transmitter for normally measuring static pressure even if a protection mechanism operates by the occurrence of an excessive pressure and a differential pressure cannot be measured.High-pre...

JP2004361159A

REMOTE SEAL TYPE PRESSURE/DIFFERENTIAL PRESSURE TRANSMITTER
To provide a remote seal type pressure/differential pressure transmitter superior in property stability by solving property instability due to hydrogen discharged from constituent materials.A flange part 3a is divided into a part having ...

RESPIRATION DETECTOR
To offer a respiration detector in which dust enters between a mobile electrode and a non-movable electrode with external air circulating through an external respiration detector to cause neither a glitch nor poor measuring, its measurem...

JP2004294175A

CONNECTING PIPE BLOCKAGE DETECTOR
To solve the problem that the blockage of a connecting pipe cannot be detected accurately since rise or fall components appear while being rocked when pressure and differential pressure are rising or falling.Three pressure or differentia...

RING FOR DIFFERENTIAL PRESSURE/PRESSURE TRANSMITTER
To provide a ring for a differential pressure/pressure transmitter having a structure for performing highly accurate measurement by surely preventing foreign matter and deposit from sticking to a liquid-contacting diaphragm while prevent...

JP2004279091A

PRESSURE SENSOR
To prevent moisture from entering an atmospheric pressure introduction hole with an inexpensive configuration in a pressure sensor for introducing an atmospheric pressure into a case for accommodating a sensor element for detecting press...

GAS FLOW MEASURING INSTRUMENT BASED ON DIFFERENTIAL PRESSURE
To provide a connecting tube structure obtained by noticing that installing two differential-pressure connecting tubes outside an exhaust tower satisfies their functions through ensuring that temperature difference between gases due to t...

DIFFERENTIAL PRESSURE AND PRESSURE TRANSMITTER
To easily carry out attaching and detaching work for a cover in an atmospheric pressure side by simple structure, and to make dust, an insect and the like easily removed even when they come into an inside of the cover. The disklike cover...

JP2004212220A

DIFFERENTIAL PRESSURE/PRESSURE TRANSMITTER
To make the direction of a detecting part freely changeable in addition to the directions of a transmission part and a meter, in response to the condition in an installed field.A pair of pressure introducing covers 12 for holding both si...

DIFFERENTIAL PRESSURE MEASURING DEVICE
To make a differential pressure measuring device less expensive by estimating a temperature of an object to be measured by using a built-in temperature sensor and eliminating the need to arrange another temperature sensor on the outside ...

JP2004184167A

PRESSURE DETECTOR, AND PRESSURIZED AIR SUPPLY DEVICE
To accurately detect air pressure inside a duct even in fire occurrence, and to enhance thereby reliability for control of pressurized air.This device is provided with pressure sensors 10, 11 for detecting the air pressures in a pressuri...

JP2004177280A

DIFFERENTIAL PRESSURE MEASUREMENT SYSTEM
To provide a differential pressure measurement system capable of easy attachment or detachment while capable of preventing a differential sensor from being damaged owing to an artificial mistake.The measurement system is provided with: t...

JP3566178B2

PRESSURE DETECTION DEVICE
To provide a highly reliable pressure detection device capable of being made small easily. This device is equipped with a housing 11 for forming therein fluid chambers 21A, 21B for introducing the fluid pressure from the outside, a press...

APPARATUS FOR DETECTING CLOGGING OF CONDUIT
To solve the problem that clogging of a conduit in all modes of high-pressure and/or low-pressure sides is not accurately detected when the clogging of the conduit is detected based on the magnitude of calculated variance value and corre...

METHOD FOR MEASURING HERMETICITY OF BUILDING
To provide a method for easily and correctly measuring a hermeticity of a building in an inhabited state. While an opening part 2 of a building 1 is opened, a ventilation fan 12 is driven and a minute differential pressure sensor 11 is s...

OSCILLATION TYPE SENSOR DETECTION CIRCUIT
To provide an oscillation type sensor detection circuit having no trouble factors for converting it into an ASIC by minimizing current/voltage converting operation and mainly using computing operation with a current signal for simplifyin...

JP2004109031A

DIFFERENTIAL PRESSURE MEASURING SYSTEM
To provide a differential pressure measuring system having the function of easily detecting abnormality of a liquid contact diaphragm for detecting the pressure of a process.The differential pressure measuring system comprises a diaphrag...

JP2004108868A

DIFFERENTIAL PRESSURE TRANSMITTER
To provide a differential pressure transmitter for reducing variations in the O/L working points due to changes in the temperature of a excessive pressure protective mechanism by a simple structure and relaxing restrictions on the specif...

JP2004093237A

DIFFERENTIAL PRESSURE/PRESSURE TRANSMITTER
To provide a pressure receiving part capable of taking a large displacement even at a low pressure by forming a pre-loaded diaphragm in a wave shape.This transmitter comprises a high pressure side diaphragm part having a high pressure si...

DIFFERENTIAL PRESSURE MEASURING INSTRUMENT
To provide a differential pressure measuring instrument without variations with the lapse of time, in which there is no need for repair or physical calibration even when immersed in a shield liquid.The differential pressure measuring ins...

JP3521322B2

DIFFERENTIAL-PRESSURE MEASURING APPARATUS
To obtain a differential-pressure measuring apparatus which is assembled easily and whose costs can be lowered by a method wherein the step part of a pressure-receiving part is formed to be a ring shape between the inside resistance-weld...

JP2004053296A

PRESSURE MEASURING APPARATUS
To provide a pressure measuring apparatus for discharging gaseous hydrogen without causing a loss or fouling up a pressure receiver due to a leak of an internal filler liquid when a filler liquid inlet is opened.A filler liquid inlet 34 ...

JP2004053603A

MICROMECHANICAL PRESSURE SENSOR DEVICE
To solve the prior art problem wherein the non-linearity of an output characteristic curve of a pressure sensor cannot be removed by a conventional method of determining the place(s) of one or more diaphragm compensation resistor(s).The ...

JP2004044585A

METHOD AND DEVICE FOR DETERMINING OIL FILTER SERVICE LIFE
To provide a method and a device for determining the length of the residual effective service life of an oil filter of an engine.An operator is informed of a service life state of the oil filter by monitoring the oil filter service life....

APPARATUS FOR MEASURING DIFFERENTIAL PRESSURE
To provide an apparatus for measuring differential pressure, which is improved in zero drift caused by plastic deformation remaining in a protection diaphragm after applying excessive pressure thereto, by controlling stress produced in t...

DIFFERENTIAL PRESSURE SENSOR
To provide a differential sensor for detecting a differential pressure by measuring a displacement of a spool which is moved by the differential pressure, and excellent in small size, simple constitution, high precision, reliability, dur...

FLOW SENSOR
To provide a new structure for a flow sensor which facilitates measurement of a minute differential pressure when a minute flow rate is measured, and has a higher withstand pressure.A chamber 20 is partitioned into a primary chamber 21 a...

JP2003337076A

DIFFERENTIAL PRESSURE MEASURING APPARATUS
To provide a differential pressure measuring apparatus that can easily and inexpensively confirm that connecting piping is clogged.In the differential pressure measuring apparatus, measurement fluid is introduced to a differential pressu...